Tracerlab
同位素示踪物实验室
🗣️ 情景例句
That's all right. We don't go to bed early.
那没关系。我们不会睡得太早。
We can't fly our kites any more because the wind has stopped.
由于风静止，所以已经没法放风筝了。
Aleko denied taking it and led Dimitri into his backyard.
阿列科不承认，并把迪米特里领进院子。